San Diego County, San Diego Rat Control Situation:
Hi David, Is a UV blacklight still useful, exterior-wise, if it rains after the rodents leave their urine stains? I am in the process of performing exterior maintenance to better exclude my roof rats. 1) I have a 25 year old cedar shake roof in San Diego California with openings under each shake along the rake edge of the roof at the gable ends of my house. There's no drip edge, i.e. under the shakes I have roofing paper (now somewhat curled) that runs more or less up to and rests right atop the fascia board. Because I have skip sheathing, and since the cross section of a shake is a wedge that is up to one inch at the upper, thick end, this appears to create many huge entry points along the rake edges even though the sheathing is rabbeted into the fascia board. As a result, I'm thinking of getting a UV blacklight to use outside the house to sleuth for urine stains along the upper edge of the gable end shakes and fascia boards. My question is, how easily does the winter rain wash away the urine, rendering this a pointless exercise? 2) I noticed a new product called "rat-out gel" and was thinking of applying it along the rake edges mentioned above. Or, maybe I should just buy many rolls of X-Clude and use that instead. Or maybe both. Any comment? Thanks very much for your website, Doug
My response: First off, I do not have experience using UV lights to detect rat urine. But I do suspect that rain will severely limit the effectiveness of this approach. I have never heard of Rat-Out Gel or XClude, but I typically stick to physical barriers rather than repellent type devices. If your roof makes this impossible, you might have a tough time keeping the rats out.
San Diego Rat Control Tip of The Week
Can Rats In An Attic Destroy The Insulation?
If you have rats in your attic, one of the things you need to be concerned about the most is your insulation because these rodents are capable of destroying the insulation of your home. Being the major part of your roof that helps to absorb the heat coming from outside and prevent it from escaping into your home, you can't afford to keep having those rats nesting in your attic.
Maybe you are wondering what the rats in your attic have to do with your insulation to the point of destroying it? Right here, we will be enlightening you on how the activities of rats in your attic can destroy the insulation of your roof.
The first reason why rats will seek out to destroy the insulation in the roof is that the soft material of the insulation is good nesting material. As a result of this, they will continuously tear the insulation, remove the materials, and then use it to build their nest in the attic.
If the rats are not removed from your attic quickly, they will multiply in number and that will increase the rate at which they tear and remove material from the insulation in your roof, leaving the insulation void.
Apart from the physical damages that rats cause to insulation, these rodents use the materials of the insulation as latrines, which usually causes stains on the surface of the insulation. When this accumulates over time, the dusty particles of the feces on the surface of the insulation will begin to escape into your house and begin to cause several airborne diseases.
Having shared this, you need not waste any more time to get rid of the rats in your attic. If you don't swing into action quickly, the damage they can cause will cost you more than you ever expected.
